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Casting pattern: Disk with trunnion
Casting pattern: Disk with trunnion

Casting pattern: Disk with trunnion

Date19th Century
Inventory Number2005-1-0185
ClassificationCasting Pattern
Subject
    Maker William Bond and Son fl. 1793 - 1977
    Cultural Region
      Place of Origin
        Material
          DescriptionWood casting pattern of a disk with a trunnion.
          Signedunsigned
          FunctionBefore sand casting an instrument part from brass or other metal, a foundry pattern is made from wood or metal. The pattern is a replica of the part to be cast. The pattern is pressed into sand, creating a cavity into which the molten metal will be poured.
          ProvenanceWilliam B. Osgood, gift to CHSI, 1959.
          Historical AttributesThese foundry patterns came from the workshop of William Bond & Son. Some of the patterns are associated with astronomical regulators and instruments used at the Harvard College Observatory. These instruments are currently in the Harvard Collection of Historical Scientific Instruments.
          Casting patterns: Three trunnions for chronograph drums
          Casting patterns: Three trunnions for chronograph drums
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0052
          Casting pattern: Bracket for drum trunnion for electric chronograph
          Casting pattern: Bracket for drum trunnion for electric chronograph
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0166
          Casting patterns: 2 movement pillars for chronographs
          Casting patterns: 2 movement pillars for chronographs
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0055
          Casting pattern: Disk
          Casting pattern: Disk
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0151
          Casting pattern: Rotating disk of electric chronograph
          Casting pattern: Rotating disk of electric chronograph
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0174
          Casting pattern: Disk
          Casting pattern: Disk
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0184
          Casting pattern: Disk
          Casting pattern: Disk
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0186
          Casting pattern: Disk
          Casting pattern: Disk
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0187
          Casting pattern: Bevelled disk
          Casting pattern: Bevelled disk
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0150
          Casting patterns and castings: 2 regulator screws patterns, 1 casting
          Casting patterns and castings: 2 regulator screws patterns, 1 casting
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0097
          Casting patterns: Weights for Bond regulators No. 394, 395, 396.
          Casting patterns: Weights for Bond regulators No. 394, 395, 396.
          William Bond and Son
          Date: circa 1867
          Object number: 2005-1-0092
          Castings and casting patterns: Terminal screws for chronograph
          Castings and casting patterns: Terminal screws for chronograph
          William Bond and Son
          Date: 19th Century
          Object number: 2005-1-0064